Distillation column



FIG. 1 is a front view of the distillation column of the present invention;

FIG. 2 is a back view of the distillation column of FIG. 1;

FIG. 3 is a side view of the distillation column of FIG. 1, as seen from the left side of FIG. 1;

FIG. 4 is a side view of the distillation column of FIG. 1, as seen from the right side of FIG. 1; and,

FIG. 5 is a perspective view of the distillation column of FIG. 1.

The broken lines showing an exemplary connection fitting is included for contextual purposes and forms no part of the claimed design. 

CLAIM The ornamental design for a distillation column, as shown. 